MERCEDES-BENZ SLC ROADSTER 2019 Owner's Manual

econ
omical driving. Ahigher levelindicat esa
more economical driving style.Ifthe three
outer areas arecomplet elyfilled atthe same
time, thedriver hasadopted themost eco-
nomic aldriving styleforthe select edsett ings
and prevailing conditions .The ECO display
border lightsup.
The ECO display doesnotindicat ethe actual
fuel consumption .The additionally achieved
range displayed underBonus fr.start Bonus
fr.start does
not indicat eafixed consumption reduction.
In addition todriving style,theactual con-
sumption isaffect edbyother factors, such as:
R load
R tire pressure
R cold start
R choice ofroute
R active electricalconsumers
These factorsare not included inthe ECO dis-
play.
An econ omical driving stylespecially requires
driving atmoderate enginespeeds.
Ach ieving ahigher valueinthe categor ies
"Acc eleration" and"Constan t":
R observe thegearshift recommendat ions.
R drive thevehicle indrive program Cor E.
In urban trafficand stop- start traffic,drive pro-
gram Cis recom mended.
On long journ eysatacon stant speed, e.g.on
the highway, onlytheouter areafor"const ant"
will change.
The ECO display summarizes thedriving style
from thestart ofthe journ eytoits complet ion.
Therefor e,there aremore marked changes in
the outer areas atthe start ofajourn ey.On
longer journeys,there arefewer changes .For
more marked changes ,perform amanual rest
(Y page 171).
Furt herinfor mation onthe ECO display
(Y page 170). Br
aking
Impor tantsafety notes G
WARN
ING
If you shift down onaslippery roadsurface
in an attem pttoincr ease theengine' sbrak-
ing effec t,the drive wheels couldlosetheir grip.
There isan incr eased danger ofskid-
ding andacciden ts.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface.
Downhill gradients !
On
long, steep gradient s,you must reduce
the load onthe brakes. Touse engine brak-
ing, shift toalower gearingood time. This
helps youtoavoid overheat ingthe brakes
and wearing themoutexces sively.
When making useofthe engine braking
effec t,itis possible thatadrive wheel may
not turn forsome time,e.g.inthe case of
suddenly changingor slippery roadsurface
con ditions .This could cause damage tothe
drive train.This type ofdamage isnot cov-
ered bythe Mercedes- Benzwarrant y.
Change intoalower gearingood timeonlong
and steep downhill gradients.This isespecially
import antifthe vehicle isladen.
This also applies ifyou have activat edcruise
con trol orAct ive Dist ance Assist DISTRONIC.
Heavy andlight loads G
WARN
ING
If you rest your footonthe brake pedal
while driving, thebraking systemcanover-
heat. Thisincreases thestoppin gdistanc e
and caneven cause thebraking systemto
fail. There isarisk ofan acciden t.
Never usethebrake pedalasafootr est.
Never depress thebrake pedalandthe
accelerat orpedal atthe same time.
! Depress
ingthe brake pedalconstant ly
results inexces siveandpremature wearto
the brake pads.
If the brakes havebeen subject edtoaheavy
load, donot stop thevehicle immediately, but
drive onfor ashort while. Thisallows theair-
flow tocool thebrakes morequickly.
Wet roads If
you have driven foralong time inheavy rain
without braking,there maybeadelayed reac-
tion from thebrakes whenbraking forthe first Driving
tips
139Driving andparking Z

tim
e.Thi sma yal so occu raf ter the vehicleha s
be en washe dor driven throughde ep water.
Yo uthe nha ve todepre ssthe brakepedal
mor efir ml y.Ma inta inagre aterdi sta nce from
the vehiclein fro nt.
After drivin gon awe troa dor havin gthe vehi-
cle washe d,bra kefirml ywh ile pa ying atte ntion
to the trafficcond itions .Thi swi llwa rm upthe
bra kediscs ,the reb ydry ing themmor equ ickl y
and protecti ngthe magainst corr osion.
Li mite dbrak ingperf orman ceon salt-
treate droad s If
yo udri ve on salte droa ds,a laye rof saltres i-
du ema yfor mon the brakediscs and brake
pa ds.Thi scan resultin asigni ficantl ylo nge r
bra king dista nce.
R In ord erto pre vent anysaltbu ild-u p,apply
the brakes occa siona lly wh ile pa ying atte n-
tio nto the trafficcond itions .
R Ca ref ully de pre ssthe brakepedaland the
be ginning andend ofajou rney .
R Ma inta inagre aterdi sta nce tothe vehicle
ah ead.
Se rvi cing the brak es !
The
brakefluidlevel maybe too low, if:
R ifthe red brakewarning lamp lights upin
the instrument cluste rand
R youhe ar awa rning tone while the engine
is running
Ob serve additio nal warning mes sage sin the
mu ltifu nctio ndisp lay.
The brakefluidlevel maybe too low du eto
bra kepadwe aror leaki ng bra kelines .
Hav ethe brakesyste mche cked immed i-
ate ly.Co nsu ltaqu alifi ed speci alistwo rk-
sho pto arrange this.
! As
the ESP ®
sy ste mopera tes automa ti-
cal ly,the engineand theigniti onmu stbe
sw itch edoff (theSma rtKeymu stbe inpo si-
tio n0092 or0047 inthe igniti onlock), ifthe
el ectri cpa rki ng bra keistes ted onabra king
dy nam ome ter(ma ximum 10second s).
Braki ngtrigg eredau toma tically by ESP ®
may causeseve redamag eto the brakesys-
tem. All
checks andmaintenance workon the brake
sy stem mustbe carri edoutat aqu alifi ed spe -
cia list wor kshop .
Have brakepads insta lled and brakefluid
rep laced ataqu alifi ed spe cialist wor kshop .
If the brakesystem hasonly beensub ject to
mode rateloads, youshou ldtest thefuncti on-
al ity ofyour bra kes atregu larinterv als.
Informa tiononBAS (BrakeAssi st)(Ypage 57).
Merce des-Benz recom mends thatyouonly
hav ebra kepads/l inings insta lled on your vehi -
cle whichhav ebee nap prov edfor Merce des-
Benz vehicles orwhi chcorre spondtoan
equ ivalent quality stand ard.Brake pads/
li nings whichhav enot beenap prov edfor
Merce des-Benz vehicles orwhi chare not ofan
equ ivalent quality cou ldaffe ctyour vehi cle's
ope ratingsafety .
Merce des-Benz recom mends thatyouonly use
bra kefluidthat hasbeenspe cially ap prov ed
for your vehi clebyMerce des-Benz, orwhi ch
corre sponds toan equ ivalent quality stand ard.
Brake fluidwhi chhas notbeenap prov edfor
Merce des-Benz vehicles orwhi chisnot ofan
equ ivalent quality cou ldaffe ctyour vehi cle's
ope ratingsafety .
Hig h-perfo rmance brakesystem
(e xc ept Merc edes-AMG SLC 43) AMG
brakesystems aredesigne dfor hea vy
loa dsand havecompo nentswith corre spond-
ing prop erties.Thi smay leadto nois ewhe n
bra king. Thiswi lldep end on:
R Spee d
R Braki ngforce
R Ambi entcondi tions, e.g.tempe ratureand
hu mid ity
The wearofindi vidualcompo nentsofthe
bra kesystem, suchasthe brakepads/l inings
or bra kediscs, depends onthe individualdri v-
ing styleand operatingcondi tions.
For this reason, itis imp ossi ble to state amil e-
ag ethat willbe validund erallcircu mstance s.
An aggres sive driving stylewi lllea dto hig h
we ar. You canobta inmore informationonthis
from aqu alifi ed spe cialist wor kshop .
New andreplaced brakepads and discs only
rea chthei ropti mum braking effectafte rsev-
era lhu ndred kilometer sof dri ving. Compe n-
sate forthis byapplying grea terforce tothe
bra keped al.Kee pthis inmind ,and adaptyo ur 140
Dri
vin gtipsDri vin gand parking

driving
andbrakin gaccor dingly during this
break- inperiod.
Ex cessiv eheavy brakingresults incorr espond-
ingly highbrake wear.Observe thebrake sys-
tem warning lampinthe instrument cluster
and noteany brake statusmessages inthe
multifun ction display. Especiallyforhigh per-
form ance driving ,it is import anttomaint ain
and have thebrake system checkedregularly. Driving
onwet road s
Hyd ropla ning If
water hasaccumulated toacert aindepth on
the road surface, thereis adanger ofhydro-
planing occurring.
For this reason, inthe event ofheavy rainorin
con dition sin which hydroplaning mayoccur,
you must driveinthe following manner:
R lower yourspeed
R avoid ruts
R avoid sudden steeringmovem ents
R brake carefully
Driving onflooded roads !
Do
not drive through flooded areas.Check
the depth ofany water before driving
thr ough it.Driv eslowly through standing
water. Otherwise, water couldenterthe
vehicle interior orengin ecompart ment.It
can then damage theengin e'sorautomatic
tran smission 'select ronic compon ents.It
can also besucked inby the engin e'sair
int ake connection andcause enginedam-
age. Winter
driving G
WARN
ING
If you shift down onaslippery roadsurface
in an atte mpt toincr ease theengin e'sbrak-
ing effec t,the drive wheels couldlosetheir
grip. There isan incr eased danger ofskid-
ding andacciden ts.
Do not shift down foradditional enginebrak-
ing onaslippery roadsurface. G
DANGER
If the exhaust pipeisblock edoradequate
vent ilation isnot possible, poisonous gases
such ascarbon monoxide(CO) mayenter
the vehicle. Thisisthe case, e.g.ifthe vehi-
cle becomes trappedinsnow. Thereisarisk
of fatal injury.
If you leave theengin eor the auxiliary heat-
ing runn ing,make suretheexhaust pipeand
area around thevehicle areclear ofsnow.
To ensure anadequate supplyoffresh air,
open awindow onthe side ofthe vehicle
that isnot facin gint othe wind.
Have yourvehicle winter-proofedataqualified
specialist workshopatthe onset ofwinter .
Driv epartic ularly carefully onslippery road
surfaces .Avoid sudden accelerat ion,steer ing
and brakin gmaneuver s.Do not use cruise
con trol.
If the vehicle threatens toskid orcann otbe
stopped whenmovin gat low speed:
X Shift thetran smission toposition 005C.
The outside temperatureindicat orisnot
designed toserve asan ice-warn ingdevice
and isther efore unsuitable forthat purpose.
Changes inthe outside temperaturearedis-
played afterashort delay.
Indic ated temper aturesjustabove thefreez ing
point donot guarantee thattheroad surface is
free ofice. The road maystillbeicy, especially
in wooded areasoron bridges. Thevehicle
could skidifyou failtoadapt yourdriving
style. Always adaptyourdriving styleanddrive
at aspeed tosuit theprevailing weathercondi-
tion s.
You should payspecial attention toroad con-
dition swhen temper aturesarearound freezing
point .
For more information ondriving withsnow
chains, see(Ypage 270).
For more information ondriving withsummer
tires, see(Ypage 269).
Observe thenotesinthe "Winter operation "
sect ion(Ypage 269). Driving
tips
141Driving andparking Z

Dri
vin gsys tems Cr
uis econt rol
Gen eral not es Crui
secontro lmain tainsa co nstant road
spe edforyou. Itbra kesaut omatically inorder
to avo idexce edin gth eset speed. Onlongand
st eep down hillgradie nts, esp ecially ifth eveh i-
cl e is lade n,you mus tsel ecta lowe rgear in
goo dtime. Bydoin gso, you willmak euse of
th ebra king effect of theen gin e.Thi srel iev es
th eload onthebra kesys tem and preven tsthe
bra kesfrom overh eating and wear ing to o
quic kly.
Use cruise contro lon lyifro ad and traff icco n-
dit ion smak eit appr opriateto main tain a
st eady speedfora pro longed period. You can
st or eany road spe edabov e20 mph
(30 km/h).
Im por tant safet ynot es If
you failtoadapt yourdrivin gst yle, cruise
co ntro lcan neither reduce theris kof an acc i-
den tno rov err ide thelaws ofphys ics. Crui se
co ntro lcan notta ke into acc oun tth ero ad,
tr aff icand weat hercond ition s.Crui secontro l
is on lyan aid. You arerespon sibleforth edis -
ta nc eto theveh icle in fron t,forveh icle spe ed,
fo rbra king ingoo dtime and forst ayin gin
lan e.
Do notuse cruise contro l:
R in road and traff icco nd ition swhic hdo not
allow youtomain tain aco nstant spe ede.g.
in heav ytraff icor on win dingro ads
R on slip peryro ad sur faces. Brak ing or acc el-
era ting could causethedri ve whee lsto los e
tr act ion and theveh icle co uld then skid
R when there ispoo rvis ibil ity, e.g. due tofog,
heav yrain orsnow
If th ere isach ang eof dri ver s,adv isethene w
dri ver ofthespe edstor ed. Cr
uis econt rollever 0043
Tostor eth ecur ren tspe edorahig her
spe ed
0044 Tostor eth ecur ren tspe edorcal lsup the
last stor ed spe ed
0087 Tostor eth ecur ren tspe edoralowe r
spe ed
0085 Todeac tivat ecr uise contro l
Whe nyou activat ecr uise contro l,th est or ed
spe edissho wninthemult ifunction display for
fiv esec onds. The speedisthen per man ently
dis playe din thest at us indic ator toget her with
th e00B2 symbol.
In veh icles withaseg men tci rc le in thespe ed-
om eter, theseg men tsbet ween thecur ren tly
st or ed spe edand theen dof theseg men tci r-
cl e ligh tup.
St oring, maintain ing andcal ling upa
sp eed St
oring andma intain ing asp eed
X Ac celer ateth eveh icle to thedes iredspe ed.
X Brief lypre ssthecr uise contro llev erup 0043
or down 0085.
X Rem oveyour foot from theacc eler ator
peda l.
Crui secontro lis act ivat ed. The vehicle aut o-
mat ically main tainsth est or ed spe ed.
You canstor eth ecur ren tspe edifyou are
dri vin gfas terth an 20 mph (30km/h).
i Crui
secontro lmay beuna bletomain tain
th est or ed spe edon uphi llgr adie nts. The
st or ed spe edisres ume dwhen thegr adie nt
eve nsout .Crui secontro lmain tainsth e
st or ed spe edon down hillgradie ntsby aut o-
mat ically apply ing th ebra kes. 142
Dri
ving systemsDr ivi ng andparki ng

Storing
orcalling upaspeed G
WARNING
If you callupthe stored speedanditdiffers
from thecurrent speed,thevehicle acceler-
ates ordecelerates. Ifyou donot know the
stored speed, thevehicle couldaccelerate
or brake unexpect edly.There isarisk ofan
accident.
Pay attent iontothe road andtraffic condi-
tions before callingupthe stored speed. If
you donot know thestored speed, storethe
desired speedagain.
X Briefly pullthecruise controllever towards
you 0087.
X Remove yourfootfrom theaccelerator
pedal.
The first time cruise controlisactivated, it
stores thecurrent speedorregulates the
speed ofthe vehicle tothe previously stored
speed.
Setting aspeed G
WARNING
Keep inmind thatitmay take abrief
moment untilthevehicle hasmade thenec-
essary adjustment s.
Incr ease ordecrease thesetvehicle speed
to avalue thattheprevailing roadcondition s
and legal speed limitspermit. Otherwise,
sudden andunexpect edacceleration or
deceleration ofthe vehicle couldcause an
accident and/orserious injurytoyou and
others.
X To
adj ust the setspeed in1mph incre-
ments (1km/h increments): brieflypress
the cruise controllever up0043 tothe pres-
sure point forahigher speed, ordown 0085
for alower speed.
Every timethecruise controllever is
pressed upordown, thelast speed stored is
increased orreduced.
X To
adj ust the setspeed in5mph incre-
ments (10km/h increments): briefly
press thecruise controllever up0043 past the pressure
pointforahigher speed, or
down 0085for alower speed.
Every timethecruise controllever is
pressed upordown, thelast speed stored is
increased orreduced.
i The
speed indicated inthe speedometer
may differ slightly fromthespeed stored.
i Cruise
controlisnot deactivated ifyou
depress theaccelerator pedal.Forexample,
if you accelerate brieflytoovertake, cruise
cont roladjusts thevehicle's speedtothe
last speed stored afteryouhave finished
overtakin g.
Deactivating cruisecontrol There
areseveral waystodeactivate cruise
cont rol:
X Briefly pressthecruise controllever for-
wards 0043.
or X Brake.
Cruise controlisautomatically deactivatedif:
R you engage theelectric parking brake
R you aredriving atless than 20mph
(30 km/h)
R ESP ®
interven esoryou deactivate ESP®
R on vehicles withmanual transmission,you
shift toagear thatistoo high, andasa
result theengine speedistoo low
R Brake Assist interven es
R you move outoftransm issionposition 005B
If cruise controlisdeactivated, youwillhear a
warning tone.Youwillsee theCruise Con‐ Cruise
Con‐
trol Off trol
Offmessage inthe multifunct iondis-
play forapproximately fiveseconds.
i When
youswitch offthe engine, thelast
speed stored iscleared. Driving
systems
143Drivingandparking Z

Acti
veDist ance AssistDIST RONIC
Gene ralnot es Ac
tive Distanc eAs sis tDI ST RONI Creg ulat es
th espee dand auto maticallyhelp syou main -
tai nth edist ancefrom theveh icledet ectedin
fr on t.Veh icles are detectedwit hth eaid ofthe
radar sensor syst em. Active Distanc eAs sis t
DI ST RONI Cbrak esauto maticallyto avoi d
ex ce edin gth eset spee dor tomain tainth e
desi gnate ddist ancefrom theveh iclein fron t.
Chan geintoalower gearingoo dtime onlong
and steep down hillgrad ients.This isespe cially
impo rtant ifth eveh icleis laden .By doin gso,
you willmak euse ofthebrak ingeffectof the
en gin e.This reliev es theload onthebrak esys-
te m and preven tsthebrak esfrom overheating
and wear ingtooquic kly.
If Ac tive Distanc eAs sis tDI ST RONI Cdet ects
th at there isaris kof aco llisi onwithth eveh i-
cle infron t,you willbewarn edvisually and
audibly. Active Distanc eAs sis tDI ST RONI C
can notpre ven ta co llisi onwithout yourinter-
ven tion .An interm itte nt warn ingtone will then
soun dand thedist ancewarn inglamp willlight
up intheins trumen tclus ter. Br ake imm edi-
ate lyin ord erto inc reas eth edist ancefrom
th eveh iclein fron t,or tak eevas iveaction,pro -
vid ed itis saf eto do so.
Fo rAc tive Distanc eAs sis tDI ST RONI Cto
assi styou when drivin g,theradar sensor sys-
te m mus tbe oper ational.
Ac tive Distanc eAs sis tDI ST RONI Coper atesin
th espee dran gebet ween 0mph (0km /h) and
12 0mph (200km /h).
Do notuse Active Distanc eAs sis tDI ST RONI C
on road swit hsteep grad ients.
As Active Distanc eAs sis tDI ST RONI Ctrans -
mit sradar waves,itcan resemb letheradar
det ectors of theres pon sibleauth orities. You
can referto therel evan tch apt erintheOper a-
to r's Man ualifques tion sare askedabout this.
i US
Aon ly: This devicehas been approved
by theFCC asa"Veh icularRadar System".
The radar sensor isint ended foruse inan
auto motiveradar systemonly. Remo val,
tam pering,or alteri ng ofthedev icewill void
any warr anties, and isno tper mittedby the
FCC. Donottam per with,alt er, oruse inany
no n-appr ovedway. An
yunaut horized mod ification tothis dev ice
co uld voidth euser 'sauth orityto oper ate
th eequip ment.
i Canad
aon ly: This devicecompli eswit h
RSS -210 ofIndust ryCanad a.Oper ation is
subj ectto thefol lowin gtwo cond ition s:
1. This devicemay notcaus eint erf ere nce,
and
2. This devicemus tacc ept any interf ere nce
rec eived, includin gint erf ere nceth at may
caus eund esiredoper ation ofthedev ice.
Remo val,tampering,or alteri ng ofthe
dev icewill voidany warr anties, and isno t
per mitted. Do nottam per with,alt er, oruse
in any non-appr ovedway.
An yunaut horized mod ification tothis dev ice
co uld voidth euser 'sauth orityto oper ate
th eequip ment.
Imp ortant safety notes G
WAR
NING
Ac tive Distanc eAs sis tDI ST RONI Cdoes not
reac tto :
R peop leor ani mals
R stati onary objects intheroad ,e. g. stop-
ped orpark edveh icles
R on comin gveh icles and cross ing traff ic
As ares ult,Ac tive Distanc eAs sis t
DI ST RONI Cmay neither givewarn ingsno r
int erv enein suc hsit uati ons.The reisaris k
of an acc iden t.
Alw ays pay careful attention tothetraff ic
sit uati onand beread yto brak e. G
WAR
NING
Ac tive Distanc eAs sis tDI ST RONI Cdoes not
reac tto :
R peop leor ani mals
R stati onary objects intheroad ,e. g. stop-
ped orpark edveh icles (ve hicles without
th eDr ivin gAs sis tan cepac kage)
R stati onary objects intheroad ,e. g. stop-
ped orpark edveh icles, ifsuf ficien tdet ec-
ti on isno tpos sible(ve hicles withth eDr iv-
ing Assis tan cepac kage)
R on comin gveh icles and cross ing traff ic 144
Driv
ingsystem sDriv ingand parki ng

As
ares ult, Active Distance Assist
DISTR ONICma ynei ther give warning snor
inte rveneinsuch situa tions. The reisaris k
of an acci dent.
Alw ayspa ycar efulatte ntionto the traffic
si tua tionand berea dytobra ke. G
WA
RNING
Dis tance keeping assista ntcanno tal wa ys
cle arly identi fyothe rroa dus ers and com-
pl ex traf ficsitua tions.
In such cas es, dista nce keeping assista nt
can:
R acce lera te or bra kethe vehicleune xpect-
ed ly
R inte rveneune xpected ly
The reisaris kof an acci dent.
Co ntinu eto drive car efully and berea dyto
bra ke, especially ifdista nce keeping assis-
tant warns you. G
WA
RNING
Active Distance AssistDISTR ONICbra kes
yo ur veh iclewi th up to50% ofthe maximu m
po ssi ble de cel era tion.Ifthi sde cel era tionis
not sufficie nt, Active Distance Assist
DISTR ONICalerts youwi th avis ualand
aco ustic warning .The reisaris kof an acci -
de nt.
Adju styour spe edinthes ecas esand main-
tai nsu fficie ntdista nce.
App lythe brakes yoursel fand /or take eva-
si ve acti on.
! Whe
nActive Distance AssistDISTR ONIC
or the HOLD functio nis acti vated ,the vehi-
cle brakes automa tically in certa insitua -
tio ns.
To avoid da ma getothe vehicle, de acti vate
Active Distance AssistDISTR ONICand the
HOLD functio nin the followi ng orsimil arsit-
ua tio ns:
R wh en tow ingthe vehicle
R in the carwash
Active Distance AssistDISTR ONICcan neither
red uce theriskof an acci dent ifyo ufai lto ad
aptyo ur driving style,nor override the laws
of phy sics. Active Distance AssistDISTR ONIC
canno ttake intoacco untroad,we ath eror traf -
fic cond itions. Active Distance Assist
DISTR ONICis onl yan aid. Yo uar eres ponsi ble
for the dista nce tothe vehiclein front, for
veh iclespe ed,for braking ingoo dtime andfor
sta ying inyour lane.
Do not useActive Distance AssistDISTR ONIC:
R In roa dand trafficcond itions which donot
al lo w yo uto ma inta inaconsta ntspe ed,e.g .
in hea vytraf ficoron windi ng roa ds
R on slip pe ry roa dsu rfa ces .Bra king oracce l-
era ting couldcau sethe drive wheelsto lose
trac tionand thevehiclecou ldthen skid
R In po or vis ibility ,e.g .du eto fog ,hea vyrain
or snow
Active Distance AssistDISTR ONICma ynot
de tect narrow vehicles driving infront, e.g.
moto rcycles,or veh icles driving inasta gge red
form ation.
In particu lar, the detecti onofobsta clescan be
imp aired if:
R The reisdirt on the sens orsorany thing else
cove ringthesens ors
R The reissnow orhea vyrain
R The reisinte rference byothe rra da rsou rces
R The rearestro ngrada rref lectio ns,forexa m-
pl e in pa rking garages
If Active Distance AssistDISTR ONICno longe r
de tects aveh iclein front, Distance Pilot
DISTR ONICma yune xpected lyacce lera te to
the speedstor ed.
Thi sspe edmay:
R Be too high ifyo uar edri ving inaturn ing
la ne oran exitla ne
R Be sohigh when driving inthe right-ha nd
la ne tha tyo uove rtake vehicles inthe left-
ha nd lane
R Be sohigh inthe left lane tha tyo upa ss
veh icles driving onthe right
If ther eis acha nge ofdri ver s,ad vis ethe new
dri ver ofthe speedstor ed. Dri
ving sys tems
145Dr ivi ng andparki ng Z

Cru
isecont rollever Cruis
econ trol leve r
0043 Tostore thecur ren tspee dor ahigh er
spee d
0044 Toset aspec ifiedmin imum distance
0087 Tostore thecur ren tspee dor call upthe
last store dspee d
0085 Tostore thecur ren tspee dor alower
spee d
0083 Todeac tivate ActiveDis tan ceAssist
DI ST RONI C
Activ ating Activ eDist ance Assist
DIST RONICand stori ng, maintaini ng
and callin gup aspe ed Imp
ortant safety notes
! When
ActiveDis tan ceAssist DIST RONI C
or theHO LD function isact ivat ed, theveh i-
cle brak esauto maticall yin cer tain situa-
tio ns.
To avoid damag eto theveh icle,deac tivate
Ac tiveDis tan ceAssist DIST RONI Cand the
HO LD function inthefoll owin gor sim ilar sit-
uatio ns:
R when towing theveh icle
R in thecar wash
To act ivat eAc tiveDis tan ceAssist DIST RONI C,
th efoll owin gcon dition smust befulf illed:
R theen gin emust bestart ed. Itmay takeup
to two minutesof driv ingbefore ActiveDis -
tan ceAssist DIST RONI Cis read yfor use.
R theelec tric park ingbrak emust berele ased.
R ES P®
must beact ive, butnotint erv ening .
R Ac tivePark ingAssist must notbe act ivat ed.
R thetrans mis sion must beinposi tion005B. R
thedriv er'sdoor must beclosed when you
shif tfr om 005Dto005B oryour seatbeltmust
be fast ened.
R thefron t-pass enger door must beclosed.
R theveh icle must notsk id.
Activ ating
X Briefl ypull thecr uise control leve rto wards
you 0085,up0043 ordown 0044.
Ac tiveDis tan ceAssist DIST RONI Cis act iva-
te d.
X To
adjust theset speedin1mp hincr e-
men ts(1 km /hincr emen ts):brie flypres s
th ecr uise control leve rup 0043 tothepres -
sure pointfor ahigh erspee d,or down 0044to
th epres sure pointfor alower speed.
Ev ery timeth ecr uise control leve ris
pres sedupordown ,th elast spee dstore dis
inc reas edorreduc ed.
or X To
adjust theset speedin5mp hincr e-
men ts(10 km/hincr emen ts):brie fly
pres sth ecr uise control leve rup 0043 past the
pres sure pointfor ahigh erspee d,or
down 0044past thepres sure pointfor alower
spee d.
Ev ery timeth ecr uise control leve ris
pres sedupordown ,th elast spee dstore dis
inc reas edorreduc ed.
X Remo veyour footfr om theacc eler ator
pedal.
Your vehicle adapt sits spee dto that ofthe
veh icle infron t,but onlyup tothedesir ed
st ore dspee d.
i If
you donotfully release theacc eler ator
pedal, theAct ive DistanceAssist pas‐ Act
ive DistanceAssist pas‐
siv e siv
emes sage appear sin themult ifunction
displ ay.The setdistanceto aslowe r-mov ing
veh icle infron twill then notbe main tained.
You willbedriv ingatthespee dyou deter-
min eby theposi tionof theacc eler ator
pedal.
You canalso activat eAc tiveDis tan ceAssist
DI ST RONI Cwhen statio nary.The lowes tspee d
th at can beset is20 mph (30km/ h).
Acti vatin gat thecur ren tsp eed/l ast
st ore dsp eed G
WAR
NING
If you callupthest ore dspee dand itdiff ers
fr om thecur ren tspee d,theveh icleacc eler - 146
Driv
ingsyst emsDriv ingand parki ng

ate
sor dec eler ates.Ifyou donotkn ow the
st ore dspee d,theveh icle coul dacc eler ate
or brak eunex pectedly. Ther eis arisk ofan
acc iden t.
Pay attent ion totheroad andtraff iccon di-
tio ns befo recallin gup thest ore dspee d.If
you donotkn ow thest ore dspee d,store the
desir edspee dagain .
X Briefly pullthecr uise control leve rto wards
you 0085.
X Remov eyour footfr om theacc eler ator
pedal.
The first tim eAc tiveDis tan ceAssist
DI STRO NICisact ivat ed, itstore sth ecur ren t
spee dor reg ulate sth espee dof theveh icle
to theprev iously store dspee d.
Pull ingawa yand driving
X If
you want topullawa ywith Activ eDis-
ta nce Assist DISTRONIC: rem ove your foot
fr om thebrak epedal.
X Briefly pullthecr uise control leve rto wards
you 0085.
or X IfAc tiveDis tan ceAssist DISTRO NICisact i-
vat ed: acceler ate brie fly.
Your vehicle pulls away andadapt sits spee d
to that oftheveh icle infron t.Ifno veh icle is
det ectedinfron t,your vehicle acceler ates
to theset spee d.
The vehicle can also pullaway when itis fac ing
an unid entified obstacle orisdriv ingonadif-
fer ent line from another veh icle.The vehicle
th en brak esauto matically. Beready tobrak e
at all tim es.
If th ere isno veh icle infron t,Ac tiveDis tan ce
As sist DISTRO NICoper atesin thesame way
as cruise control.
If Ac tiveDis tan ceAssist DISTRO NICdetectsa
slowe r-mov ingvehicle infron t,itbrak esyour
veh icle.In this way, thedist anceyou have
selec tedis main tained.
If Ac tiveDis tan ceAssist DISTRO NICdetectsa
fast er-mov ingvehicle infron t,itinc reas esthe
driv ingspee d.Howe ver,th eveh icle ison ly
acc eler atedup tothespee dyou have store d. Select
ingthedr ive progr am
Ac tiveDis tan ceAssist DISTRO NICsuppo rts a
spor tydriv ingstyle when youhave selected
th eS or S+ driv eprog ram(Ypage 124).
Ac cel erat ionbehin dth eveh icle infron tor to
th eset spee dis then noticeably more
dynam ic.Ifyou have selectedth eC or Edriv -
ing prog ram,th eveh icle acceler atesmor e
gen tly. Incit ytraff icand stop- start traff ic,
driv eprog ramCis rec omm ended.
Cha nging lanes
If you want tochang eto theove rtakin glane
on mult i-laneroads ,Ac tiveDis tan ceAssist
DI STRO NICsuppo rts you if:
R you aredrivingfast erthan 45 mph
(70 km/h)
R Ac tiveDis tan ceAssist DISTRO NICismain -
tain ingthedist anceto aveh icle infron t
R you switchon theappro priatetur nsign al
R Ac tiveDis tan ceAssist DISTRO NICdoes not
cur ren tlydet ect adang erofcol lision
If th ese condition sare fulfilled, yourvehicle is
acc eler ated.Ac cel erat ionwill beinterr upte dif
ch ang inglane stak estoolon gor ifth edis-
tan cebet ween yourvehicle and theveh icle in
fr on tbec ome sto osmall .
i When
youchang elane s,Ac tiveDis tan ce
As sist DISTRO NICmon itorstheleft lane on
left -hand- driveveh iclesor therigh tlane on
righ t-han d-driveveh icles.
St opp ing G
WAR
NING
If you leave thedriv er'sseat when theveh i-
cle ison lybein gbrak edbyActiveDis tan ce
As sist DISTRO NIC,itcoul droll away:
R ifth ere isamalf unctionin thesyst emor
in thevolt age supply
R ifAc tiveDis tan ceAssist DISTRO NICis
deac tivate dusin gth ecr uise control leve r,
for exam plebyaveh icle occupant orfrom
out side theveh icle
R ifth eelec trical systemintheeng inecom -
part men t,th ebat tery or thefuse sare
tam pere dwith Driv
ingsyst ems
147Drivingand parking
Z

R
ifthe batt eryisdisco nnect ed
R ifthe vehic leisacc elerat ed,e.g. byavehi-
cle occ upant
There isarisk ofan acc ident .
Always deactivateActiveDist anceAss ist
DI STRON ICand secur ethe vehic leagainst
rollin gaway beforeyou leave it.
Furt herinformat ionondeact ivatingAc tiveDis-
tan ceAss istDISTRON IC(Y page 149).
If Ac tiveDist anceAss istDISTRON ICdete cts
that thevehic lein fro ntissto pping ,it brak es
your vehic leunt ilit is stat ionar y.
Onc eyour vehic leisstat ionar y,itremain ssta-
tion aryand youdonot need todepres sthe
brak e.
i Af
ter atim e,the elect ricpark ingbrak e
secur esthe vehic leand reliev esthe serv ice
brak e.
i Depe
ndingon the spec ified minimum dis-
tan ce, your vehic lewill com eto astan dstill
at asuffic ientdistancebehin dthe vehic lein
fro nt.The spec ified minimum distanceis set
using thecontrol on the cruis econ trol lever .
When ActiveDist anceAss istDISTRON ICis
act ivate d,the transm ission isshift edautom ati-
cally toposit ion005Dif:
R the drive r'sseat beltisnot fastened andthe
drive r'sdoor isopen
R the engin eis switc hedoff,unless itis auto-
matic allyswitc hedoffbythe ECO start/
sto pfunc tion.
The elect ricpark ingbrak eis applied automati-
cally ifAc tiveDist anceAss istDISTRON ICis
act ive when thevehic leisstat ionar yand:
R asyst emmalfun ction occurs
R the power supply isnot suffic ient
If amalfun ction occurs, thetransm ission may
also shift toposit ion005Dautom atically.
Sett ingaspeed Keep
inmin dthat itmay takeabrief mome nt
unt ilthe vehic lehas accelerat edorbrak edto
the speed set.
X To
adjust theset speed in1mp hincre-
ment s(1 km /hincrem ents):brieflypress
the cruis econ trol lever up0043 tothe pres- sure
point forahigher speed, ordown 0044
for alower speed.
Ev ery timethe cruis econ trol lever is
press edup ordown, thelast speed stored is
inc reased orreduc ed.
X To
adjust theset speed in5mp hincre-
ment s(10 km/hincrem ents):briefly
press thecruis econ trol lever up0043 past the
press urepoint forahigher speed, or
down 0044for alower speed.
Ev ery timethe cruis econ trol lever is
press edup ordown, thelast speed stored is
inc reased orreduc ed.
Sett ingaspecified minimumdist ance You
cansetthe spec ified minimum distance
for ActiveDist anceAss istDISTRON ICby vary-
ing the timespan betwee none andtwosec-
onds .This determin esthe distancethat Active
Dist anceAss istDISTRON ICisto maint ainfrom
the vehic lein fro nt,depen dingonthe road
speed. Youcanseethis distancein the multi-
func tion display (Ypage 149).
The spec ified minimum distancecan be
chan gedwhile ActiveDist anceAss ist
DI STRON ICisswitc hedonoroff.
Make surethatyoumaint ainasuffic ientlysafe
dist ancefro mthe vehic lein fro nt.Adj ust the
dist anceto the vehic lein fro ntifnec essary. Cruise
control lever
X To increa se:turn control 0087 towar d0044.
Ac tiveDist anceAss istDISTRON ICthe n
maint ainsagreat erdist ancebetwee nyour
vehic leand thevehic lein fro nt.
X To decr ease: turncontrol 0087 towar d0043.
Ac tiveDist anceAss istDISTRON ICthe n
maint ainsashor terdist ancebetwee nyour
vehic leand thevehic lein fro nt. 148
Driving
systemsDriving andparking